Connector, connector device

Abstract

To provide a connector for suppressing rattling and stabilizing the relative location of the connector to a mating connector and a connector device.SOLUTION: A connector (receptacle connector 3) that mates with a mating connector (plug connector 2) by pushing it therein includes a second housing 30 having a mating portion 31 with which a first housing 20 of the mating connector mates on the outside and a projection 35 provided on the outer circumference of the mating portion 31 and in contact with an inner wall 20a of the first housing 20 of the mating connector.SELECTED DRAWING: Figure 2

Description

[Technical field]

[0001] The present invention relates to a push-in connector and connector device. [Background technology]

[0002] A known connector device is a push-type connector device in which a mating portion of a second housing of a connector is fitted into the inside of a first housing of a mating connector to electrically connect the terminals of the two connectors (for example, Patent Document 1). [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2018-206501 A Summary of the Invention [Problem to be solved by the invention]

[0004] In the above connector and connector device, a gap is provided between the mating portion and the first housing to allow the two connectors to be mated and removed. This can cause the mating connector to rotate around the mating direction relative to the connector or become misaligned, resulting in rattle in both connectors and preventing the connector and connector device from achieving the performance required for the connector.

[0005] The present invention has been made to solve the above-mentioned problems, and its object is to provide a connector and connector device that can suppress rattling and stabilize the relative positional relationship of the connector to the mating connector. [Means for solving the problem]

[0006] The connector of the present invention is a connector that mates with a mating connector by pushing it in, and is characterized in that it comprises a second housing having a mating portion into which a first housing of the mating connector mates with the outside, and a protrusion provided on the outer periphery of the mating portion and which contacts the inner wall of the first housing of the mating connector.

[0007] The connector device of the present invention comprises a plug connector having a first housing, and a receptacle connector having a second housing having an engaging portion that engages with the first housing, and the plug connector and the receptacle connector are engaged by pushing in, and is characterized in that the engaging portion is provided on the outer periphery of the engaging portion and has a protrusion that contacts the inner wall of the first housing of the plug connector.

[0008] The connector device of the present invention comprises a plug connector having a first housing, and a receptacle connector having a second housing having a mating portion that mates with the first housing, and the plug connector and the receptacle connector are mated by pushing them together, and is characterized in that the plug connector has a protrusion provided on the inner wall of the first housing and contacts the outer periphery of the mating portion of the receptacle connector.

[0009] The connector of the present invention is a connector that mates with a mating connector by pushing it in, and is characterized in having a first housing that mates with a mating portion of a second housing of the mating connector, and a protrusion provided on the inner wall of the first housing that contacts the outer periphery of the mating portion of the mating connector. Effect of the Invention

[0010] According to the present invention, it is possible to obtain a connector and a connector device which suppresses rattling and stabilizes the relative positional relationship of the connector with respect to the mating connector. [Brief description of the drawings]

[0011] [Figure 1]1 is a perspective view of a connector device in a mated state according to an embodiment; [Diagram 2] 1 is a perspective view of a connector device according to an embodiment in which the mated state has been released. [Diagram 3] 1 is a front view of a connector device according to an embodiment. [Figure 4] 4 is a cross-sectional view taken along line AA in FIG. [Diagram 5] 1 is a plan view of a connector device according to an embodiment. [Figure 6] 6 is a cross-sectional view of FIG. 5 taken along line B-B. [Figure 7] FIG. 2 is a perspective view of a receptacle connector according to an embodiment. [Figure 8] FIG. 2 is an exploded perspective view of the receptacle connector according to the embodiment. [Figure 9] FIG. 2 is a plan view of the receptacle connector according to the embodiment. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0012] [Embodiment] [composition] Fig. 1 is a perspective view of a connector device according to an embodiment in a mated state, and Fig. 2 is a perspective view of a connector device according to an embodiment in a released mated state.

[0013] In the following embodiment, for convenience of explanation, the mating / removal direction of both connectors 2, 3 is the Z (Z1, Z2) direction, the direction perpendicular to the Z direction and in which the electric cable 4 extends is the X (X1, X2) direction, and the direction perpendicular to the X and Z directions is the Y (Y1, Y2) direction. The Z2 direction is the mating direction, and the Z1 direction is the removal direction. Note that each direction is for explaining the relative positional relationship of the parts constituting the connector device 1, and does not indicate an absolute direction. The Y direction may be referred to as the left-right direction, and in particular, the Y1 direction may be referred to as the left direction, or the Y1 side may be referred to as the left side relatively, and the Y2 direction may be referred to as the right direction, or the Y2 side may be referred to as the right side relatively. In the Z direction, the Z1 side may be referred to as the upper side or upper side, or the top, and the Z2 side may be referred to as the lower side, lower side, lower side, or bottom side relatively.

[0014] As shown in Fig. 1 and Fig. 2, the connector device 1 includes a plug connector 2 and a receptacle connector 3. The plug connector 2 is used by connecting to one end of an electric cable 4, and the receptacle connector 3 is used by being installed on the surface of a housing of a motor or other device, and in this embodiment, it can be installed on a servo motor for industrial equipment. The plug connector 2 and the receptacle connector 3 are push-in type connectors. That is, the plug connector 2 and the receptacle connector 3 are fitted together by being pushed in the Z2 direction, and the terminals of both connectors 2, 3 are electrically connected to each other. In other words, the push-in type connector does not include a connector in which fitting and electrical connection of terminals are ensured by screwing.

[0015] Fig. 3 is a front view of the connector device, and Fig. 4 is a cross-sectional view taken along line AA in Fig. 3. Fig. 5 is a plan view of the connector device, and Fig. 6 is a cross-sectional view taken along line BB in Fig. 5.

[0016] As shown in Figs. 1 to 4, the plug connector 2 includes a first housing 20, an operating lever 21, a clamp receiving portion 22, a clamp 23, a gasket 24, a clamp member 25, a terminal, and the like. The clamp 23 fixes the electric cable 4 to the plug connector 2 via the clamp receiving portion 22 fixed to the first housing 20, the gasket 24, and the clamp member 25. The clamp receiving portion 22 is fixed to the first housing 20 by a fixing member such as a screw 51 with an annular seal member 50 having elasticity such as rubber interposed at its end in the X2 direction (see Fig. 4, for example). As shown in Figs. 1, 2, and 4, the clamp 23 is a cylindrical member made of an insulating material such as resin. The gasket 24 is a ring-shaped elastic member such as rubber, and the clamp member 25 is a cylindrical member made of an insulating material such as resin. 4, a part of the gasket 24 is fitted into a recess 22a provided at the end of the clamp receiving portion 22 in the X1 direction, and the remaining part of the gasket 24 is fitted into a recess 25a provided at the end of the clamp member 25 in the X2 direction, the clamp 23 is fitted around the gasket 24 and the clamp member 25, and the electric cable 4 is fixed to the first housing 20 by screwing or the like with the electric cable 4 passing through the gasket 24, the clamp member 25, and the clamp 23. In this embodiment, the connector device 1 is provided with two electric cables 4, a power cable and a signal cable, but the type and number of electric cables 4 are not particularly limited.

[0017] The first housing 20 is made of a conductor, and here is a die-cast metal formed into a box shape. A mating portion 31 (described later) of the receptacle connector 3 is fitted inside the first housing 20. An inner wall 20a of the first housing 20 is inclined so that the internal space of the first housing 20 expands toward the end 20b of the first housing 20 into which the mating portion 31 is inserted.

[0018] An internal fitting portion that houses a terminal electrically connected to the electric cable 4 is provided inside the first housing 20. The internal fitting portion includes an internal housing 201 provided in the first housing 20 and a terminal (not shown) held by the internal housing 201. The internal housing 201 is an insulating member such as resin, and holds the terminal. The internal housing 201 may hold the terminal by press-fitting into a hole (not shown) provided in the internal housing 201, or may hold the terminal by integral molding. The terminal is a conductor that is electrically connected to the terminal of the receptacle connector 3. In this embodiment, the terminal includes a power terminal and a signal terminal. Therefore, two internal housings 201, left and right, are provided inside the first housing 20. The power terminal is held by the left internal housing 201, and the signal terminal is held by the right internal housing 201. The internal fitting portion (or the left and right internal housings 201) each have a protrusion 201a extending in the Z2 direction including a power terminal and a signal terminal, and the protrusion 201a fits into a corresponding recess in the internal housing 301 of the receptacle connector 3 described below, thereby electrically connecting the terminals of both connectors 2, 3 (see Figure 4).

[0019] The first housing 20 is provided with a hook portion 20d on a front surface 20c thereof, which extends in the left-right direction and protrudes from the front surface 20c, and a rotation shaft 20f is provided along the Y direction near the center of the left and right side surfaces 20e.

[0020] As shown in Figures 1 and 2, the operating lever 21 has a U-shape that follows the shape of the first housing 20 from one side 20e to the other side 20e of the first housing 20, making it possible to maintain the mated state between the plug connector 2 and the receptacle connector 3 and also to release this mated state.

[0021] Specifically, the operating lever 21 has a cover portion 211 extending in the Y direction, and a pair of arm portions 212 extending from both ends of the cover portion 211 toward the rotation shaft 20f to cover the left and right side surfaces 20e. The cover portion 211 covers the front surface 20c of the first housing 20 when the mated state of both connectors 2, 3 is maintained as shown in Fig. 1, and covers the upper surface 20g of the first housing 20 when the mated state of both connectors 2, 3 is released as shown in Fig. 2.

[0022] The arm portion 212 is provided with a bearing portion 212b having a shaft hole 212a formed therein, and a rotating shaft 20f is inserted into this shaft hole 212a, whereby the operating lever 21 is rotatably supported relative to the first housing 20. The operating lever 21 can rotate around the rotating shaft 20f by a predetermined angle (for example, 90°). The operating lever 21 can rotate from a position in which the fitted state shown in Fig. 1 is maintained (hereinafter also referred to as the "first position") to a position in which the fitted state shown in Fig. 2 is released (hereinafter also referred to as the "second position"), and conversely, can also rotate from the second position to the first position.

[0023] 2 and 6, the arm portion 212 is provided with a cam groove 212c. When the two connectors 2, 3 are mated, the cam groove 212c engages with a bulging portion 34 of the receptacle connector 3, which will be described later, by the rotation of the operating lever 21, and the operating lever 21 is fixed to a second housing 30 of the receptacle connector 3, which will be described later, and the plug connector 2 is locked to the receptacle connector 3. The cam groove 212c is formed by recessing a part of the outer side of the arm portion 212. That is, the arm portion 212 is branched into a bearing portion 212b and an arm 212d from the cover portion 211, and the edge of the arm 212d comes into sliding contact with the bulging portion 34 when the operating lever 21 rotates. 6, tip 212e of arm 212d bulges toward bulging portion 34, and in particular, when operating lever 21 rotates during mating, plug connector 2 receives a resistance from bulging portion 34 via tip 212e, and a force is applied to receptacle connector 3 (Z2 direction). Furthermore, arm 212d prevents unnecessary rotation of operating lever 21 by tip 212e after mating.

[0024] The cover portion 211 is provided with an elastic claw portion 211a that protrudes inward. When the operating lever 21 is lowered all the way down, i.e., when it is positioned in the first position, the claw portion 211a gets caught on a hook portion 20d provided on the front surface 20c of the first housing 20, thereby preventing unnecessary rotation of the operating lever 21.

[0025] Fig. 7 is a perspective view of the receptacle connector, Fig. 8 is an exploded perspective view of the receptacle connector, and Fig. 9 is a plan view of the receptacle connector.

[0026] The receptacle connector 3 has a second housing 30 , a protrusion 35 , an annular groove 36 , a seal member 37 , a seal seat member 38 , an inner housing 301 , and terminals 302 .

[0027] The second housing 30 is made of a conductor, and is, for example, a die-cast metal in this embodiment. The second housing 30 can be connected to earth. The second housing 30 has a fitting portion 31, a flange portion 32, a locking wall portion 33, and a bulge portion .

[0028] As shown in Figs. 7 and 8, the fitting portion 31 has a cylindrical shape and extends in the Z direction. The end of the fitting portion 31 on the Z1 side is the front end, and the end on the Z2 side is the rear end. As shown in Figs. 2 and 4, the fitting portion 31 fits into the inside of the first housing 20 from the front end side. The outer shape of the fitting portion 31 has a rectangular shape with rounded corners in a plan view. That is, the outer wall constituting the fitting portion 31 has a rectangular shape with rounded corners in a plan view. In addition, the outer shape of the fitting portion 31 is slightly smaller than that of the first housing 20 in a plan view, and a gap is provided between the outer periphery of the fitting portion 31 and the inner wall 20a of the first housing 20.

[0029] 8, a through hole 311 penetrating in the Z direction is provided inside the fitting portion 31, and a wall 312 is provided in the through hole 311 to separate a space to the left and right. Therefore, the through hole 311 has through holes 311a and 311b on the left and right sides formed by the wall 312. The inner housing 301 is accommodated in the through holes 311a and 311b.

[0030] The inner housing 301 is made of an insulating material such as resin and holds the terminals 302. The terminals 302 are conductors electrically connected to the terminals of the plug connector 2. In this embodiment, the terminals 302 include a power terminal 302a, a signal terminal 302b, and a ground terminal 302c. The power terminal 302a is a terminal electrically connected to the power electric cable 4. The signal terminal 302b is a terminal electrically connected to the signal electric cable 4. The ground terminal 302c is a terminal connected to the ground. In this embodiment, the power terminal 302a and the ground terminal 302c are held in the left inner housing 301, and the signal terminal 302b is held in the right inner housing 301. As shown in FIG. 4, the inner housing 301 has a recess 301a at the end on the Z1 side, and the protrusions 201a of the plug connector 2 are fitted into the recess 301a. This allows the terminals of both connectors 2 and 3 to be electrically connected.

[0031] The flange portion 32 expands outward from a rear end portion (i.e., an end portion on the Z2 side of the fitting portion 31) opposite to a front end portion (i.e., an end portion on the Z1 side of the fitting portion 31) into which the plug connector 2, which is a mating connector of the fitting portion 31, is inserted. In other words, the flange portion 32 has a rectangular shape in a plan view. The flange portion 32 is a portion for fixing the receptacle connector 3 to the target device in which the receptacle connector 3 is to be installed. In this embodiment, screw holes 32a are provided at the four corners of the flange portion 32, and the receptacle connector 3 can be fixed to the target device by inserting and fastening fixing members such as screws (not shown) into the screw holes 32a. When the first housing 20 is fitted into the fitting portion 31 and pushed in the Z2 direction, the end portion 20b of the first housing 20 abuts against the upper surface of the flange portion 32 (see FIG. 4).

[0032] The locking wall portion 33 is erected on the flange portion 32 in the extension direction (Z1 direction) of the fitting portion 31. In this embodiment, the locking wall portion 33 is a pair of plate-like bodies, and is provided on the flange portion 32 with its plane parallel to the ZX direction and sandwiching the fitting portion 31. Here, the locking wall portion 33 is disposed outside the outer wall of the fitting portion 31, which is the short side of a rectangle in a plan view. The tip portion (Z1 side end portion) of the locking wall portion 33 is formed in a tapered shape.

[0033] The bulging portion 34 is a protrusion provided to protrude from the Z1 side end of the pair of locking wall portions 33 toward the mating portion 31. As shown in FIG. 6, the cross-sectional shape of the bulging portion 34 has a tapered shape tapered toward the flange portion 32 side. When the operation lever 21 is rotated and lowered, the bulging portion 34 enters and engages with the cam groove 212c. That is, the bulging portion 34 is located on the arm 212d and is in sliding contact with the upper edge of the arm 212d, so that a force (force in the Z2 direction) toward the flange portion 32 can be applied to the plug connector 2, which is the mating connector, via the arm 212d (operation lever 21). In this way, the two connectors 2 and 3 are mated, and the plug connector 2 is locked to the receptacle connector 3, and the mated state is maintained. The position in this state is the first position. On the other hand, when the operating lever 21 is raised by a predetermined angle, the bulge 34 comes out of the cam groove 212c, the engagement with the cam groove 212c (arm 212d) is released, and the mated state is released. The position where this state is reached is the second position. That is, by rotating the operating lever 21, the bearing portion 212b slides and rests on the tapered upper portion of the locking wall portion 33. Note that after the plug connector 2 is locked, the tip portion 212e of the arm 212d protruding toward the bearing portion 212b may be hooked on the edge of the bulge 34 to strengthen the locked state of the operating lever 21.

[0034] As shown in Figs. 7 and 8, the protrusion 35 is provided on the outer periphery of the fitting portion 31 and bulges outward from the fitting portion 31. Specifically, the protrusion 35 has a tapered inclination toward the tip end side of the fitting portion 31 into which the plug connector 2 is inserted. When the protrusion 35 is fitted with the plug connector 2, which is a mating connector, the protrusion 35 comes into contact with the inner wall 20a of the second housing 30 (see Fig. 4). Therefore, by connecting the fitting portion 31 to earth, the first housing 20 can also be connected to earth. As shown in Fig. 9, in this embodiment, the protrusion 35 is provided on the outer walls of the fitting portion 31 that face each other and are two sides of a rectangular shape in a plan view, and here, at least two protrusions 35 are provided at intervals on each of the facing outer walls that are the long sides of the rectangular shape. The number of protrusions 35 and the locations where the protrusions 35 are provided are not limited to these. For example, one or more protrusions 35 may be provided on each of the outer walls of the fitting portion 31 that form the long sides and short sides of the rectangular shape, or the protrusions 35 may be provided only on the outer wall of the fitting portion 31 that forms the short sides of the rectangular shape.

[0035] The annular groove 36 is provided on the outer periphery of the fitting portion 31, closer to the flange portion 32 than the protrusion 35. Here, as shown in Fig. 8, the annular groove 36 is a groove provided annularly around the fitting portion 31 on the rear end side of the fitting portion 31.

[0036] The seal member 37 is an elastic member having elasticity, such as rubber. The seal member 37 is annular and fitted into the annular groove 36. The seal member 37 is, for example, a packing. The thickness of the seal member 37 is such that the seal member 37 is fitted into the annular groove 36 and protrudes outward beyond the protrusion 35 in an unloaded state. In other words, the outer shape of the seal member 37 is similar to that of the fitting portion 31 in a plan view, and is one size larger outward than the fitting portion 31 including the protrusion 35. As shown in FIG. 4, when the first housing 20 is fitted into the fitting portion 31, the seal member 37 is compressed inward by the inner wall 20a of the first housing 20 and comes into close contact with the inner wall 20a of the first housing 20 over one circumference, and the compression of the seal member 37 causes the inner wall 20a of the first housing 20 to come into physical contact with the protrusion 35.

[0037] The sealing sheet member 38 is an annular sheet member laid on the bottom surface of the flange portion 32. Here, the external shape of the sealing sheet member 38 is rectangular in a plan view, and is approximately the same as the external shape of the flange portion 32 in a plan view. The sealing sheet member 38 is made of an elastic material such as rubber. The sealing sheet member 38 is, for example, a packing. When the flange portion 32 is fixed to the installation target device, the screw holes 32a of the flange portion 32 and the screw holes 38a provided in the sealing sheet member 38 are aligned with each other, and fixing members such as screws are inserted into the screw holes 32a, 38a and fastened, whereby the fastening force compresses the sealing sheet member 38 in the Z direction, and the receptacle connector 3 is fixed to the installation target device.

[0038] [Actions and Effects] (1) The connector of this embodiment is a connector (receptacle connector 3) that mates with a mating connector (plug connector 2) by being pushed in, and includes a second housing 30 having a mating portion 31 into which the first housing 20 of the mating connector mates with the outside, and a protrusion 35 provided on the outer periphery of the mating portion 31 and that comes into contact with the inner wall 20a of the first housing 20 of the mating connector.

[0039] As a result, the protrusion 35 is interposed between the inner wall 20a of the first housing 20 and the fitting portion 31, so that rattling can be suppressed and the relative positional relationship of the connector with respect to the mating connector can be stabilized.

[0040] (2) The mating portion 31 and the first housing 20 are made of a conductor. This allows the housings 20, 30 of the two connectors 2, 3 to be electrically connected to each other via the protrusion 35, so that the two connectors 2, 3 can be grounded. In addition, the protrusion 35 can suppress wobbling, so that even if the electric cable 4 is moved in the mated state, the electrical continuity of the two connectors 2, 3 can be stably maintained. Therefore, when the connector 3 (connector device 1) of this embodiment is used in industrial equipment such as a servo motor, even if an overcurrent such as a lightning surge occurs, it can be passed to the ground. There is a technique for ensuring an earth connection by attaching an external member such as a metal spring to the second housing 30, but the number of parts and the number of assembly steps increase by the amount of the external member attached, whereas the number of parts and the number of assembly steps can be reduced according to this embodiment.

[0041] (3) The outer shape of the mating portion 31 is a rectangle with rounded corners in a plan view, and the protrusions 35 are provided on the outer walls that constitute the mating portion 31, which are two opposing sides of the rectangle. This makes it possible to suppress rotation of the mating plug connector 2 around the mating direction, and ensures stable contact between the housings 20, 30 of both connectors 2, 3.

[0042] (4) At least two protrusions 35 are provided at intervals on each of the opposing outer walls that form the long sides of the rectangular shape, thereby making it possible to suppress rotation of the mating plug connector 2 around the mating direction and to ensure more stable contact between the housings 20, 30 of both connectors 2, 3.

[0043] (5) The protrusion 35 has a tapered inclination on the tip side into which the mating connector of the fitting portion 31 is inserted. This makes it easier to fit the protrusion 35 with the mating connector (plug connector 2).

[0044] (6) The second housing 30 has a flange portion 32 extending outward from a rear end portion opposite to the tip end into which the mating connector (plug connector 2) of the mating portion 31 is inserted. The flange portion 32 is provided with a locking wall portion 33 erected in the extension direction of the mating portion 31 and a bulge portion 34 protruding from the locking wall portion 33 toward the mating portion 31. The bulge portion 34 engages with a cam groove 212c provided in an arm portion 212 of an operating lever 21 rotatably supported on the first housing 20 of the mating connector by rotation of the operating lever 21 during mating, thereby applying a force toward the flange portion 32 to the mating connector.

[0045] This can assist in mating with the mating connector. That is, in the connector device 1, which is mated by pushing, it may be difficult to insert it all the way by human force. Even in such a case, the rotation of the operating lever 21 engages the bulging portion 34 with the cam groove 212c provided in the arm portion 212 of the operating lever 21, and a force that pulls the mating connector into the connector (receptacle connector 3) can be applied via the operating lever 21, thereby assisting the mating.

[0046] (7) The fitting portion 31 has an annular groove 36 provided on the outer periphery thereof closer to the flange portion 32 than the protrusion 35, and an elastic annular seal member 37 fitted into the annular groove 36. This ensures waterproof performance.

[0047] That is, the seal member 37 is compressed so as to be in close contact with both the mating portion 31 and the inner wall 20a of the first housing 20 in the gap between them, and the waterproof performance on the protrusion 35 side rather than the seal member 37 can be ensured. Also, the protrusion 35 contacts the inner wall 20a of the first housing 20 of the mating connector, and serves as a spacer between the inner wall 20a of the first housing 20 of the mating connector and the outer periphery of the mating portion 31 of the second housing 30. Therefore, the gap between the first housing 20 and the second housing 30 can be made uniform around the mating portion 31. As a result, the compression amount of the seal member 37 can be made uniform around the mating portion 31, and the waterproof performance can be stably ensured. In other words, the compression load on the seal member 37 can be reduced, and a situation in which a specific portion of the seal member 37 is excessively compressed and the compression amount of the opposite portion is reduced due to a relative deviation in the positional relationship between the two connectors 2 and 3 can be suppressed, so that the excessive load on the seal member 37 can be reduced and stable waterproof performance can be ensured.

[0048] (8) The connector device 1 of this embodiment includes a plug connector 2 having a first housing 20, and a receptacle connector 3 having a second housing 30 having a fitting portion 31 that fits with the first housing 20, and is a connector device 1 in which the plug connector 2 and the receptacle connector 3 are fitted together by pushing, and the fitting portion 31 has a protrusion 35 that is provided on the outer periphery of the fitting portion 31 and comes into contact with an inner wall 20a of the first housing 20 of the plug connector 2. Also, the inner wall 20a of the first housing 20 is inclined so that the internal space of the first housing 20 expands toward the end portion 20b of the first housing 20 into which the fitting portion 31 is inserted. As a result, when the mating portion 31 is inserted into the mating connector (the first housing 20), the inner wall 20a of the first housing 20 does not come into contact with the protrusion 35 when the insertion is shallow, but by inserting it toward the back (Z2 side), the protrusion 35 can come into contact with the inner wall 20a of the first housing 20, making it easier to fit.

[0049] [Other embodiments] The present invention is not limited to the above-described embodiment, but also includes other embodiments described below. The present invention also includes a combination of all or any of the above-described embodiment and the other embodiments described below. Furthermore, these embodiments can be omitted, replaced, or modified in various ways without departing from the scope of the invention, and such modifications are also included in the present invention.

[0050] For example, in the above embodiment, the projection 35 is provided on the fitting portion 31 of the receptacle connector 3, but it may be provided on the first housing 20 of the plug connector 2.

[0051] That is, a connector device 1 according to another embodiment comprises a plug connector 2 having a first housing 20, and a receptacle connector 3 having a second housing 30 having an engaging portion 31 that engages with the first housing 20, and the plug connector 2 and the receptacle connector 3 are engaged by pushing in, and the plug connector 2 may be provided on an inner wall 20a of the first housing 20 and have a protrusion 35 that contacts the outer periphery of the engaging portion 31 of the receptacle connector 3.

[0052] Also within the scope of the present invention is a connector (plug connector 2) that mates with a mating connector (receptacle connector 3) by pushing in, the connector having a first housing 20 that mates with a mating portion 31 of a second housing 30 of the mating connector, and a protrusion 35 provided on the inner wall 20a of the first housing 20 and that contacts the outer periphery of the mating portion 31 of the mating connector.

[0053] Furthermore, when the protrusion 35 is provided on the inner wall 20a of the first housing 20 in this manner, the protrusion 35 is provided on the inner wall 20a of the first housing 20 so as to be closer to the tip end of the mating portion 31 than the annular groove 36 or the seal member 37 when both connectors 2, 3 are mated. In this case, instead of the above embodiment in which the inner wall 20a of the first housing 20 is inclined, the mating portion 31 may have a tapered inclination (i.e., a taper) on the tip end side where the plug connector 2 is inserted. [Explanation of symbols]

[0054] 1 Connector device 2 Plug Connector 20 1st Housing 201 Inner Housing 201a Convex 20a inner wall 20b end 20c front 20d Hook 20e Side 20f Rotation axis 20g top surface 21 Operating lever 211 Cover part 211a Claw part 212 Arm section 212a Shaft hole 212b Bearing part 212c Cam groove 212d Arm 212e Tip 22 Clamp receiving part 22a Recess 23 Clamp 24 Gasket 25 Clamping member 25a Recess 3 Receptacle Connector 30 Second Housing 301 Inner Housing 302 Terminal 302a Power terminal 302b signal terminal 302c Earth terminal 31 Fitting part 311 Through hole 311a Through hole 311b Through hole 312 Wall 32 Flange section 32a screw hole 33 Locking wall 34 Bulge 35 Protrusion 36 Annular groove 37 Sealing material 38 Seal sheet material 4 Electrical Cables 50 Sealing material 51 Screw

Claims

1. A connector that is fitted to a mating connector by pushing it in, a second housing having a fitting portion into which the first housing of the mating connector fits to an outside; An annular groove provided on an outer periphery of the fitting portion; an annular elastic seal member fitted in the annular groove; a protrusion that is provided on an outer periphery of the fitting portion closer to a tip end portion of the fitting portion into which the mating connector is inserted than the annular groove or the seal member, and that comes into contact with an inner wall of the first housing of the mating connector; Equipped with The seal member fitted in the annular groove has an outer shape that protrudes outward beyond the protrusion in an unloaded state. connector.

2. The fitting portion and the first housing are made of a conductor. The connector of claim 1 .

3. The fitting portion has an outer shape having a rectangular shape with rounded corners in a plan view, The protrusions are provided on outer walls that constitute the fitting portion, the outer walls being two opposing sides of the rectangular shape. The connector according to claim 2.

4. the second housing has a flange portion extending outward from a rear end portion of the mating portion opposite to a front end portion into which the mating connector is inserted, The flange portion is provided with a locking wall portion that stands in an extension direction of the fitting portion, and a bulge portion that protrudes from the locking wall portion toward the fitting portion, the bulge portion engages with a cam groove provided in an arm portion of an operating lever rotatably supported on the first housing of the mating connector by rotation of the operating lever during the fitting, thereby applying a force toward the flange portion to the mating connector; The connector according to any one of claims 1 to 3.

5. a plug connector having a first housing; a receptacle connector including a second housing having a mating portion that mates with the first housing; a connector device in which the plug connector and the receptacle connector are fitted together by pushing the plug connector into the receptacle connector, The receptacle connector includes: An annular groove provided on an outer periphery of the fitting portion; an annular elastic seal member fitted in the annular groove; a protrusion is provided on an outer periphery of the fitting portion closer to a tip end portion into which the plug connector is inserted than the annular groove or the seal member, the protrusion coming into contact with an inner wall of a first housing of the plug connector; The seal member fitted in the annular groove has an outer shape that protrudes outward beyond the protrusion in an unloaded state. Connector device.

6. An inner wall of the first housing is inclined so that the internal space of the first housing expands toward the end side of the first housing into which the fitting portion is inserted.

6. The connector device according to claim 5.

7. a plug connector having a first housing; a receptacle connector including a second housing having a mating portion that mates with the first housing; a connector device in which the plug connector and the receptacle connector are fitted together by pushing the plug connector into the receptacle connector, The receptacle connector includes: An annular groove provided on an outer periphery of the fitting portion; an annular elastic seal member fitted in the annular groove; Equipped with the plug connector includes an inner wall of the first housing, the inner wall being located at a position deeper than the annular groove or the seal member when the plug connector and the receptacle connector are fitted together, the protrusion coming into contact with an outer periphery of the fitting portion of the receptacle connector, The seal member fitted in the annular groove has an outer shape that protrudes outward beyond the protrusion in an unloaded state. Connector device.

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